/**
 * Copyright (c) Tiny Technologies, Inc. All rights reserved.
 * Licensed under the LGPL or a commercial license.
 * For LGPL see License.txt in the project root for license information.
 * For commercial licenses see https://www.tiny.cloud/
 *
 * Version: 5.6.2 (2020-12-08)
 */
(function () {
    'use strict';

    var global = tinymce.util.Tools.resolve('tinymce.PluginManager');

    var global$1 = tinymce.util.Tools.resolve('tinymce.util.Tools');

    var setDir = function (editor, dir) {
        var dom = editor.dom;
        var curDir;
        var blocks = editor.selection.getSelectedBlocks();
        if (blocks.length) {
            curDir = dom.getAttrib(blocks[0], 'dir');
            global$1.each(blocks, function (block) {
                if (!dom.getParent(block.parentNode, '*[dir="' + dir + '"]', dom.getRoot())) {
                    dom.setAttrib(block, 'dir', curDir !== dir ? dir : null);
                }
            });
            editor.nodeChanged();
        }
    };

    var register = function (editor) {
        editor.addCommand('mceDirectionLTR', function () {
            setDir(editor, 'ltr');
        });
        editor.addCommand('mceDirectionRTL', function () {
            setDir(editor, 'rtl');
        });
    };

    var noop = function () {
    };
    var compose1 = function (fbc, fab) {
        return function (a) {
            return fbc(fab(a));
        };
    };
    var constant = function (value) {
        return function () {
            return value;
        };
    };
    var never = constant(false);
    var always = constant(true);

    var none = function () {
        return NONE;
    };
    var NONE = function () {
        var eq = function (o) {
            return o.isNone();
        };
        var call = function (thunk) {
            return thunk();
        };
        var id = function (n) {
            return n;
        };
        var me = {
            fold: function (n, _s) {
                return n();
            },
            is: never,
            isSome: never,
            isNone: always,
            getOr: id,
            getOrThunk: call,
            getOrDie: function (msg) {
                throw new Error(msg || 'error: getOrDie called on none.');
            },
            getOrNull: constant(null),
            getOrUndefined: constant(undefined),
            or: id,
            orThunk: call,
            map: none,
            each: noop,
            bind: none,
            exists: never,
            forall: always,
            filter: none,
            equals: eq,
            equals_: eq,
            toArray: function () {
                return [];
            },
            toString: constant('none()')
        };
        return me;
    }();
    var some = function (a) {
        var constant_a = constant(a);
        var self = function () {
            return me;
        };
        var bind = function (f) {
            return f(a);
        };
        var me = {
            fold: function (n, s) {
                return s(a);
            },
            is: function (v) {
                return a === v;
            },
            isSome: always,
            isNone: never,
            getOr: constant_a,
            getOrThunk: constant_a,
            getOrDie: constant_a,
            getOrNull: constant_a,
            getOrUndefined: constant_a,
            or: self,
            orThunk: self,
            map: function (f) {
                return some(f(a));
            },
            each: function (f) {
                f(a);
            },
            bind: bind,
            exists: bind,
            forall: bind,
            filter: function (f) {
                return f(a) ? me : NONE;
            },
            toArray: function () {
                return [a];
            },
            toString: function () {
                return 'some(' + a + ')';
            },
            equals: function (o) {
                return o.is(a);
            },
            equals_: function (o, elementEq) {
                return o.fold(never, function (b) {
                    return elementEq(a, b);
                });
            }
        };
        return me;
    };
    var from = function (value) {
        return value === null || value === undefined ? NONE : some(value);
    };
    var Optional = {
        some: some,
        none: none,
        from: from
    };

    var isSimpleType = function (type) {
        return function (value) {
            return typeof value === type;
        };
    };
    var isFunction = isSimpleType('function');

    var isSupported = function (dom) {
        return dom.style !== undefined && isFunction(dom.style.getPropertyValue);
    };

    var fromHtml = function (html, scope) {
        var doc = scope || document;
        var div = doc.createElement('div');
        div.innerHTML = html;
        if (!div.hasChildNodes() || div.childNodes.length > 1) {
            console.error('HTML does not have a single root node', html);
            throw new Error('HTML must have a single root node');
        }
        return fromDom(div.childNodes[0]);
    };
    var fromTag = function (tag, scope) {
        var doc = scope || document;
        var node = doc.createElement(tag);
        return fromDom(node);
    };
    var fromText = function (text, scope) {
        var doc = scope || document;
        var node = doc.createTextNode(text);
        return fromDom(node);
    };
    var fromDom = function (node) {
        if (node === null || node === undefined) {
            throw new Error('Node cannot be null or undefined');
        }
        return {dom: node};
    };
    var fromPoint = function (docElm, x, y) {
        return Optional.from(docElm.dom.elementFromPoint(x, y)).map(fromDom);
    };
    var SugarElement = {
        fromHtml: fromHtml,
        fromTag: fromTag,
        fromText: fromText,
        fromDom: fromDom,
        fromPoint: fromPoint
    };

    var Global = typeof window !== 'undefined' ? window : Function('return this;')();

    var DOCUMENT = 9;
    var DOCUMENT_FRAGMENT = 11;
    var TEXT = 3;

    var type = function (element) {
        return element.dom.nodeType;
    };
    var isType = function (t) {
        return function (element) {
            return type(element) === t;
        };
    };
    var isText = isType(TEXT);
    var isDocument = isType(DOCUMENT);
    var isDocumentFragment = isType(DOCUMENT_FRAGMENT);

    var owner = function (element) {
        return SugarElement.fromDom(element.dom.ownerDocument);
    };
    var documentOrOwner = function (dos) {
        return isDocument(dos) ? dos : owner(dos);
    };

    var isShadowRoot = function (dos) {
        return isDocumentFragment(dos);
    };
    var supported = isFunction(Element.prototype.attachShadow) && isFunction(Node.prototype.getRootNode);
    var getRootNode = supported ? function (e) {
        return SugarElement.fromDom(e.dom.getRootNode());
    } : documentOrOwner;
    var getShadowRoot = function (e) {
        var r = getRootNode(e);
        return isShadowRoot(r) ? Optional.some(r) : Optional.none();
    };
    var getShadowHost = function (e) {
        return SugarElement.fromDom(e.dom.host);
    };

    var inBody = function (element) {
        var dom = isText(element) ? element.dom.parentNode : element.dom;
        if (dom === undefined || dom === null || dom.ownerDocument === null) {
            return false;
        }
        var doc = dom.ownerDocument;
        return getShadowRoot(SugarElement.fromDom(dom)).fold(function () {
            return doc.body.contains(dom);
        }, compose1(inBody, getShadowHost));
    };

    var get = function (element, property) {
        var dom = element.dom;
        var styles = window.getComputedStyle(dom);
        var r = styles.getPropertyValue(property);
        return r === '' && !inBody(element) ? getUnsafeProperty(dom, property) : r;
    };
    var getUnsafeProperty = function (dom, property) {
        return isSupported(dom) ? dom.style.getPropertyValue(property) : '';
    };

    var getDirection = function (element) {
        return get(element, 'direction') === 'rtl' ? 'rtl' : 'ltr';
    };

    var getNodeChangeHandler = function (editor, dir) {
        return function (api) {
            var nodeChangeHandler = function (e) {
                var element = SugarElement.fromDom(e.element);
                api.setActive(getDirection(element) === dir);
            };
            editor.on('NodeChange', nodeChangeHandler);
            return function () {
                return editor.off('NodeChange', nodeChangeHandler);
            };
        };
    };
    var register$1 = function (editor) {
        editor.ui.registry.addToggleButton('ltr', {
            tooltip: 'Left to right',
            icon: 'ltr',
            onAction: function () {
                return editor.execCommand('mceDirectionLTR');
            },
            onSetup: getNodeChangeHandler(editor, 'ltr')
        });
        editor.ui.registry.addToggleButton('rtl', {
            tooltip: 'Right to left',
            icon: 'rtl',
            onAction: function () {
                return editor.execCommand('mceDirectionRTL');
            },
            onSetup: getNodeChangeHandler(editor, 'rtl')
        });
    };

    function Plugin() {
        global.add('directionality', function (editor) {
            register(editor);
            register$1(editor);
        });
    }

    Plugin();

}());
